Manufacture of landsides for plowshares.



PATENTED NOV. 22, 1904.

J. B. JARMIN. MANUFACTURE OF .LANDSIDES FOB. PLOWSHARES.

APPLICATION .I'ILED IEBJO, 1904.

2 SHEETS-SHEET 1.

170 MODEL.

PATENTED Nov. 22,1904.

J. B. JARMIN. MANUFACTURE OF LANDSIDES FOR PLOWSHARES.

APPLICATION FILED FEB. 10, 1904.

2 SHEETS-SHBET 2.

110 MODEL.

In /ere 227 UNTTED STATES Patented November 22, 1904.

PATENT OEETcE.

PLOW COMPANY, OF MADISON, VISOONSIN,

\VISOONSIN.

A OORPORATI ON OF MANUFACTURE OF LANDSIDES FOR PLOWSHARES.

SPECIFICATION forming part of Letters Patent No. 775,424, dated November22, 1904. Application filed February 10, 1904. Serial No. 193,007. (Nomodel.)

To a, whom it nut concern:

Be it known that 1, JAMES B. JARMIN, acitizen of the United States,residing at Madison, in the county of Dane and State of Wisconsin, haveinvented certain new and useful Improvements in the Manufacture ofLandsides for Plowshares, of which the following is a specilication.

My invention relates to improvements in the manufacture of landsides forplowshares.

The object of my invention is to provide a simple, eifective,andinexpensive way for manufacturing a landside with a sufiiciently thickand properly-formed welding edge out of a commercial form of blank insuch a manner as to largely avoid waste and so as to reduce the numberof operations, while at the same time producing a landside so formed asto be readily welded to the plowshare, so as to form a strongproperly-reinforced joint. This and such other objects as mayhereinafter appear are accomplished by the operations illustrated in theaccompanying drawings, in which Figure 1 is a perspective View of thestock from which I form my improved landsides. Fig. 2 is a plan view ofthe section of the stock after the first operation of my process. Fig. 3is a plan view of a blank as first formed. Fig; 4. is a plan view of theblank after the next operation. Fig. 5 is an elevation of the blankshown in Fig. 4:. Fig. 6 is an end view thereof stood on edge. Fig. 7 isa sectional view through the plowshare and landside, and Fig. 8 is aview of a plowshare with the attached edge of the landside indicate indotted 111168.

Like letters of reference indicate the same parts in the several figuresof the drawings.

Referring by letter to the accompanying drawings, A indicates the stockin the form of channel-iron. This stock material I out off into suitablelengths, as at J l say each one foot long. I then by any suitable meanscut or stamp out of the stock-piece an oval piece, as indicated at B inFig. 2, thereby producing two triangular blanks of the shape shown inFig. 3, each provided with a flange along the outer edge thereof andcurved at the inner edge thereof. Then by any suitable dies (not hereshown) the blank is shaped to the form shown in Figs. f and5. By thisoperation what was formerly the curved inner edge of the web becomes astraight edge, while the flanged edge 60 becomes curved, and therearedge of the plowshare extends diagonally to the straight edge of theweb, thereby giving the blank the typical form of a landside for aplowshare. At the same time the edge of the web is partially upset, asshown at C, Fig. 5, thereby thickening and reinforcing the toe of thelandside and forcing the metal of the blank into the dies in such amanner as to give the Wedgeshaped point to the landside, (shown in Fig.5,) While at the same time the flanged edge of the landside is inclined,as more clearly shown in Figs. 6 and 7.

The landside as so formed is now ready as a commercial article to besupplied to blacksmiths and others, is shaped so as to properly fit theplowshare D without any forming, and is provided with a reinforcedflanged edge, which may be readily welded to the plowshare, so as toafford a solid reinforced welded joint.

When the landside is welded to the plowshare, the edge adjoining the toeof the plowshare is still further upset and flattened out by the weldingoperation, as shown in Fig. 8, so as to serve the double purpose ofextending the welded joint over a flanged surface and at the same timebringing the forward edges of the landside and of the plowshare to acommon point of convergence.

It will thus be seen that by two simple operations, the first being thestamping or punching out of the oval section from the stock and thesecond being the forging in dies of the blank so formed, I am enabled tomake a simple, strong, cheap, and properlyformed landside ready forattachment to the plowshare and all with a minimum waste of material.

While I have described what is in some respects the simpler operation,the details of the process may be varied by first cutting diagonallyacross the stock, thus forming two triangular blanks, and then removingthe surplus metal from the long side of each of such blanks.

I claim 1. The improvement in the manufacture of landsides forplowshares which comprises punching a section out of an oblong blank ofchannel-iron, so as to form two substantially triangular blanks, eachprovided with a straight flanged edge and with a curved unflanged edge,and then forging said blanks in dies so as to straighten the unflangededge and curve the flanged edge to fit a plowshare,

and upsetting a portion of the unflanged edge, substantially asdescribed.

2. The improvement in the manufacture of landsides for plowshares, whichcomprises curve the flanged edge, substantially as described.

JAMES B. J ARMIN. Witnesses:

JAs. BARCLAY, L. H. OORSTERSEN.

